Remove unnecessary -1 in substring call

Substring goes from `beginIndex` to `endIndex - 1`. Having the `- 1` in the code here makes the resulting string be of size 11, but should be size 12.

Author: Cyborger1

src/main/java/com/botdetector/ui/BotDetectorPanel.java

@@ -1035,7 +1035,7 @@ private void predictPlayer()
 		{
 			searchBar.setIcon(IconTextField.Icon.ERROR);
 			searchBarLoading = false;
-			setPredictionError(target.substring(0, MAX_RSN_LENGTH - 1) + "...",
+			setPredictionError(target.substring(0, MAX_RSN_LENGTH) + "...",
 				"Name Input Error",
 				"Name cannot be longer than " + MAX_RSN_LENGTH + " characters");
 			return;